Finding the Fourth Proportional to 1,530.14, 2,291.82 and 870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.14 : 2,291.82 = 870.50 : x
2. Step 2: Convert to fraction form
   1,530.14/2,291.82 = 870.50/x
3. Step 3: Cross multiply
   1,530.14x = 2,291.82 × 870.50
4. Step 4: Simplify right side
   1,530.14x = 1,995,029.31
5. Step 5: Solve for x
   x = 1,995,029.31/1,530.14
6. Step 6: Final answer
   x = 1,303.82